CN102833862B - Communication method, base station and terminal equipment - Google Patents

Communication method, base station and terminal equipment Download PDF

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Publication number
CN102833862B
CN102833862B CN201110163877.9A CN201110163877A CN102833862B CN 102833862 B CN102833862 B CN 102833862B CN 201110163877 A CN201110163877 A CN 201110163877A CN 102833862 B CN102833862 B CN 102833862B
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China
Prior art keywords
base station
transmitting power
victim cell
empty frame
community
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CN201110163877.9A
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Chinese (zh)
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CN102833862A (en
Inventor
罗海燕
邓天乐
汤斌淞
杨利
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Honor Device Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201110163877.9A priority Critical patent/CN102833862B/en
Priority to PCT/CN2012/077062 priority patent/WO2012171502A1/en
Priority to JP2014515053A priority patent/JP5668956B2/en
Publication of CN102833862A publication Critical patent/CN102833862A/en
Priority to US14/105,801 priority patent/US20140098746A1/en
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Publication of CN102833862B publication Critical patent/CN102833862B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/143—Downlink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
    • H04W16/08—Load shedding arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a communication method, which comprises the following steps of: determining positions of almost empty frames and transmitting power of almost empty frames by a first base station of severing for a first cell according to obtained adjustment information of a second cell under a second base station, and determining a frame structure aiming at the second cell according to the adjustment information, the positions of almost empty frames and the transmitting power of almost empty frames. The invention also provides a base station and terminal equipment. According to the invention, the transmitting power on each almost empty frame is self-adaptively adjusted according to the adjustment information of the second cell, thereby reducing interference between the first cell and the second cell.

Description

The means of communication, base station and terminal equipment
Technical field
The embodiment of the present invention relates to communication technical field, particularly relates to a kind of means of communication, base station and terminal equipment.
Background technology
Third generation partner program (Third Generation Partnership Project; Hereinafter referred to as: development 3GPP), can provide higher peak user throughput, average user throughput and edge user throughput, brings better transfer of data to experience to user.Simultaneously, provide the interference problem of the minizone be positioned under base station of Communications service also to produce to user thereupon.How effectively to solve the interference of minizone, improve resource utilization ratio and become industry problem in the urgent need to address.
Summary of the invention
The invention provides a kind of means of communication, base station and terminal equipment, to solve the interference problem between different districts.
One aspect of the present invention provides a kind of means of communication, comprising:
The adjustment information being positioned at the second community under the second base station that the first base station serving the first community obtains according to it, determines the position of almost empty frame and the transmitting power of almost empty frame;
According to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame, determine the frame structure for described second community.
The present invention provides a kind of base station on the other hand, comprising:
First receiver, for receiving the adjustment information of the second community be positioned under the second base station;
First processor, for according to described adjustment information, determine the position of almost empty frame and the transmitting power of described almost empty frame, and determine the frame structure for described second community according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame;
First transmitter, for sending described frame structure to described second base station.
Another aspect of the invention provides a kind of base station, comprising:
Second transmitter, for launching the adjustment information of the second community be positioned under described base station to the first base station serving the first community;
Second receiver, for the transmitting power of the position and described almost empty frame that receive the almost empty frame that described first base station is determined according to described adjustment information;
Second processor, for determining the frame structure for described second community according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame.
Further aspect of the present invention provides a kind of terminal equipment, comprising:
3rd receiver, for receiving the frame structure for the second community be positioned under the second base station that the first base station sends in the first community, described frame structure is determined by the transmitting power of the first base station according to the subframe position of adjustment information, the almost empty frame of described second community and described almost empty frame;
3rd transmitter, for sending described frame structure to described second base station.
Further aspect of the present invention provides a kind of terminal equipment, comprising:
4th receiver, the basis sent in the first community for receiving the first base station is positioned at the subframe position of the determined almost empty frame of adjustment information and the transmitting power of described almost empty frame of the second community under the second base station;
4th transmitter, for described in sending almost the subframe position of empty frame and the transmitting power of described almost empty frame to described second base station, the frame structure determining for described second community according to the transmitting power of the adjustment information of described second community, the subframe position of described almost empty frame and described almost empty frame in order to described second base station.
The present invention can adjust each transmitting power almost in empty frame adaptively according to the adjustment information of described second community, thus reduce the interference of described first community and described second minizone, improve the spectrum efficiency of the first community in almost empty frame, also can realize the time-domain transfer resource different according to the different business demand flexible allocation of the second community.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The means of communication schematic flow sheet that Fig. 1 provides for the first embodiment of the present invention;
The means of communication schematic flow sheet that Fig. 2 provides for the second embodiment of the present invention;
The means of communication schematic flow sheet that Fig. 3 provides for the third embodiment of the present invention;
The means of communication schematic flow sheet that Fig. 4 provides for the fourth embodiment of the present invention;
Fig. 5 is network diagram of the present invention;
The base station schematic diagram that Fig. 6 provides for the fifth embodiment of the present invention;
The base station schematic diagram that Fig. 7 provides for the sixth embodiment of the present invention;
The terminal equipment schematic diagram that Fig. 8 provides for the seventh embodiment of the present invention;
The terminal equipment schematic diagram that Fig. 9 provides for the eighth embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.Further, the module of embodiment can merge into a module, also can split into multiple submodule further.
It will be appreciated by those skilled in the art that all or part of of implementation method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, above-mentioned program of stating, when performing, performs the flow process comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
In the communication system of different embodiments of the invention application, comprise at least one first base station and at least one second base station.One or more first community is served in described first base station, and one or more second community is served in described second base station.Wherein, described first community is interference source community, described second community can be victim cell, described interference source community and victim cell are relative concept, the communication that interference source community can be thought victim cell causes the community of signal disturbing, and victim cell can think the community being disturbed cell-of-origin interference in communication.Those skilled in the art will appreciate that described first base station can be described as interference source community own base station, described second base station can be described as victim cell own base station.Described multiple second community (i.e. victim cell) can be served by second base station, also can be served by the second different base stations.Such as, described interference source community and described victim cell can be neighbor cell.And for example, the base station serving described victim cell and interference source community can be macro base station, or is grand micro-base station, or is micro-base station etc., but various embodiments of the present invention are not limited in this.
The inter-cell interference coordination mechanism (Inter-Cell Interference Coordination) of time-domain is introduced in different embodiments of the invention, to victim cell transmission, there is almost empty frame (Almost Blank Subframe by interference source community, be called for short ABS) sub-frame formats, solve channel interference problem when interference source community and victim cell mixed deployment.Described almost empty frame refers to the subframe of low-power or low activity on Radio Resource.Such as, described almost empty frame does not carry data and control signal.And for example, described almost empty frame does not carry data, but carries all or part of control signal.The non-almost empty frame occurred in the present invention refers to the subframe on Radio Resource with normal power.Such as, non-almost empty frame is the subframe normally carrying out carrying.
Different embodiments of the invention can be different for the second different cell configuration almost empty frame; and adjust each transmitting power almost in empty frame adaptively according to the adjustment information of described second community; the Signal transmissions of the second base station in described almost empty frame is protected with this; namely transmission and the transfer of data of normal power can be carried out in the second base station in described almost empty frame, and prevents the interference of described first community and described second minizone.
Below, by reference to the accompanying drawings each specific embodiment is described in detail.
A kind of means of communication reference that first embodiment of the invention provides as shown in Figure 1, comprising:
S101: the adjustment information being positioned at the second community under the second base station that the first base station serving the first community obtains according to it, determines the position of almost empty frame and the transmitting power of almost empty frame;
S102: according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame, determine the frame structure for described second community.
In the present embodiment, can by the configuration to almost empty frame, the first base station is made in described almost empty frame, not transmit data to terminal equipment, and normal power transfer of data can be carried out to terminal equipment in the second base station in described almost empty frame, thus the channel disturbance of the first base station when making terminal equipment receive the data transmitted the second base station, can not be subject to, and signal is dry makes an uproar and can to meet the demands than (signal to interference and noise ratio), improve the spectrum efficiency of the first base station in almost empty frame, also the time-domain transfer resource different according to the business demand flexible allocation of the second community can be realized.
The means of communication that second embodiment of the invention provides, with reference to shown in figure 2, comprising:
S201: the adjustment information being positioned at the second community under the second base station that the first base station serving the first community obtains according to it, determines the position of almost empty frame and the transmitting power of almost empty frame; With
S202: described first base station is the position of adjustment information, described almost empty frame and the transmitting power of described almost empty frame according to described second community, determines the frame structure for described second community, and described frame structure is sent to described second base station.
In above-mentioned S201, the adjustment information of described second community can be that described first base station obtains before configuration sub-frame formats, or described first base station obtains in advance, and acquisition pattern has multiple.In the present embodiment, X2 interface can be passed through, S1 interface in described first base station, or Uu interface etc. receives the adjustment information of described second community.Such as, when being received and sent messages by Uu interface between first, second base station described, described second base station can send adjustment information to the second Cell Broadcast CB, described adjustment information can be read in described first base station, also can read described adjustment information by terminal equipment, and described adjustment information is reported described first base station.
The adjustment information of described second community can be that the transmitting power that described first base station is maximum can be tolerated in the present load of described second community and described second community.Or the adjustment information of described second community can be present load and the interference threshold of described second community.The present load of described second community refers to the Radio Resource loading condition of described second community.Described interference threshold is the radio frequency interference threshold value that described first base station of described second community reception is caused it, in the present embodiment, described interference threshold can be understood as the maximum of described first base station to the radio frequency interference that described second community is caused, and described interference threshold also can be understood as the received power maximum sent by described first base station that described second community receives.Certainly, in other embodiments, described interference threshold also can using the present load of the first community as the first base station the weighted value to the radio frequency interference value that the second community is caused, and determine the concrete numerical value of described interference threshold according to described weighted value.Wherein, the present load of described first community refers to the Radio Resource loading condition of described first community.
Describedly can tolerate for described second community the transmitting power that described first base station is maximum, can determine according to the path loss of the interference threshold of described second community and the first community and the second minizone.Such as can be determined tolerate for described second community the transmitting power that described first base station is maximum by the ratio of the first base station according to the path loss of the interference threshold of the second community and the first community and the second minizone.Also can by described by the interference threshold of the second base station according to described second community, and the ratio of the path loss of described first community and described second minizone determines that the transmitting power that described first base station is maximum can be tolerated in described second community, and described second community can be tolerated the maximum transmission power information in described first base station is sent to described first base station by the second base station.
As an example, the relative physical location obtaining described first community and described second community can be passed through in described first base station, to confirm the path loss of described first community and described second minizone.Wherein, path loss approves to be performed by the first base station really, also can be performed by the second base station.
In S201, comprise further: described first base station determines that the transmitting power that described first base station is maximum can be tolerated in described second community; And the transmitting power that described first base station is maximum can be tolerated according to described second community in described first base station, the transmitting power of the almost described almost empty frame that empty frame is corresponding described in determining.
The position of described almost empty frame can be embodied by much information.Such as, can be embodied by the subframe numbers at almost empty frame place, after namely determining the subframe numbers of almost empty frame, namely determine the position of almost empty frame.And for example, almost the position of empty frame can be embodied by the number of almost empty frame, and after the sum of subframe and the number of almost empty frame are determined, according to certain rule or make an appointment, almost the position of empty frame also just determines.For another example described in, almost the position of empty frame also can by the positional information of the first almost empty frame on frame structure, and the location interval information of other almost empty frame and described first almost empty frame on described frame structure embodies.Certainly almost the position of empty frame also can be embodied by other information, as long as can determine the position of almost empty frame, does not repeat them here.
In the present embodiment, the number of the almost empty frame for described second community by the present load ratio of described second community, can be determined in described first base station.Specifically, described first base station obtains the present load of described second community, and according to following formula (1), determines the present load ratio of described second community.
Present load/(load of current total load+the first community of all second communities) formula (1) of present load ratio=the second community of the second community
Shown in Fig. 5, be example explanation to have the network scenarios of first community and four the second communities (A, B, C, D).Assuming that the first community is interference source community, second community is victim cell, according to formula (1), suppose that the present load of the second community A accounts for the first community and all second community (A, B, C, the present load ratio of total load D) is that in 10%, second community B, C, D, the present load of any one accounts for the first community and all second community (A, B, C, the present load ratio of total load D) is 20%, then can confirm described second community (A, B, C, D) number of sub-frames of almost empty frame that needs respectively is no more than 2.Such as, can determine that the number of sub-frames of the almost empty frame needed for described second community A is 1, the number of sub-frames of the almost empty frame needed for any one in described second community B, C, D is 2.
In the present embodiment, the number of almost empty frame can be determined according to said method, the almost position of empty frame on frame structure described in can determining according to the number of described almost empty frame further.Certainly almost the position of empty frame also can be embodied by other information or predetermined way, as long as can determine the position of almost empty frame, does not repeat them here.
In S202, concrete, according to described second community, frame structure for described second community can tolerate that the maximum transmitting power in described first base station, the position of described almost empty frame and the transmitting power of described almost empty frame are determined by described first base station, or determined by the transmitting power of the first base station according to the interference threshold of described second community, the position of described almost empty frame and described almost empty frame.Wherein, described second community can be extrapolated according to the interference threshold of described second community and can tolerate the transmitting power that described first base station is maximum, described in detail in S201, do not repeating herein.
Such as, be example explanation with further reference to network scenarios shown in Fig. 5.Assuming that described first base station has different transmitting powers, be respectively P 1and P 2, and the maximum transmission power of patient first base station, described second community (A, B, C, D) is respectively P a, P b, P c, P d, wherein, P b=P c=P dand P 1≤ P a< P 2≤ P b.
For the frame structure of 10 subframe compositions, assuming that described frame structure there are 2 almost empty frame, all the other subframes are non-almost empty frame.The position that a kind of possible almost empty frame is positioned at described frame structure is: transmitting power is P 1almost empty frame be the 1st work song frame, transmitting power is P 2almost empty frame be the 2nd work song frame.Certainly, transmitting power is respectively P 1, P 2almost empty frame also can lay respectively at other subframes on described frame structure, as transmitting power is respectively P 1, P 2almost empty frame also can be positioned at the 3rd work song frame on described frame structure and the 4th work song frame.
For the second community (B, C, D), work as P b=P c=P dand P 1≤ P a< P 2≤ P btime, the second base station can confirm that the transmitting power of No. 1 and No. 2 almost empty frame meets the maximum transmission power P that the first base station can be tolerated in the second community (B, C, D) b, P c, P d, therefore the frame structure for described second community (B, C, D) can be determined in the second base station, such as, be 1100000000, or 0011111111.Namely, for the first base station, No. 1 and the 2nd work song frame are almost empty frame, and for the second base station, transmission and the transfer of data of normal power can be carried out in No. 1 and/or the 2nd work song frame, thus the interference avoided between the first community and the second community (B, C, D).
For the second community A, work as P b=P c=P dand P 1≤ P a< P 2≤ P btime, the second base station can determine that the transmitting power of No. 1 almost empty frame meets the maximum transmission power P that the second community A can tolerate the first base station a, therefore the frame structure for described second community A can be determined in the second base station, such as, be 1000000000, or 0111111111.Namely, for the first base station, the 1st work song frame is almost empty frame, and for the second base station, can carry out transmission and the transfer of data of normal power on the 1st work song frame, thus avoids the interference between the first community and the second community A.
Further, described frame structure is sent to the second base station serving described second community (A, B, C, D) by described first base station.
In the present embodiment, described frame structure is sent to the second base station serving described second community by described first base station by X2 interface.Or described frame structure is sent to by S1 interface or Uu interface (described Uu interface is such as eated dishes without rice or wine for air interface or abbreviation) the second base station serving described second community by described first base station.Such as, when being received and sent messages by Uu interface between first, second base station described, described first base station sends described frame structure in the broadcast of described first community that it controls, and described second base station is read described broadcast thus obtained described frame structure.Again such as, described frame structure, after described broadcast is read in described first community, is reported described second base station by terminal equipment.
By the scheme that the present embodiment provides, the first base station can be determined frame structure for the second community and described frame structure is sent to described second base station, thus reduces the interference of described first community and described second minizone.The almost empty frame of the frame structure for the second community that simultaneously the second base station can be determined according to the first base station carries out transfer of data, improves the spectrum efficiency of the first community in almost empty frame.Configuration due to almost empty frame has taken into full account the relevant information of the second community, can realize the time-domain transfer resource different according to the different business demand flexible allocation of the second community.
The means of communication of the third embodiment of the present invention, with reference to shown in figure 3, comprising:
S301: the adjustment information being positioned at the second community under the second base station that the first base station serving the first community obtains according to it, determines the position of almost empty frame and the transmitting power of almost empty frame;
S302: the position of the transmitting power of described almost empty frame and described almost empty frame is sent to described second base station by described first base station, so that the transmitting power of described second base station according to described adjustment information, described almost empty frame and the position of described almost empty frame, determine the frame structure of described second community.
Wherein, S301 is roughly the same with the step in the S201 in the second embodiment, repeats no more herein.
In S302, the almost transmitting power of empty frame and the position of correspondence, described second base station is informed in described first base station, according to described second community, described second base station can tolerate that the interference threshold of the transmitting power that described first base station is maximum or described second community determines its available frame structure voluntarily.
Concrete, the maximum transmitting power in described first base station, the position of described almost empty frame and the transmitting power of described almost empty frame can be tolerated according to described second community in described second base station, determine the frame structure for described second community, or the frame structure for described second community is determined according to the transmitting power of the interference threshold of described second community, the position of described almost empty frame and described almost empty frame in described second base station.
Wherein, described second community can be extrapolated according to the interference threshold of described second community can tolerate and the transmitting power that described first base station is maximum specifically can refer to the associated description of the second embodiment, do not repeating herein.
Such as, shown in Fig. 5, be example explanation to have the network scenarios of described first community and described second community (A, B, C, D).For the frame structure of 10 subframe compositions, suppose there are 2 almost empty frame, all the other subframes are non-almost empty frame.The position that a kind of possible almost empty frame is positioned at described frame structure is: transmitting power is P 1almost empty frame be the 1st work song frame, transmitting power is P 2almost empty frame be the 2nd work song frame.Suppose that on frame structure No. 1 and almost empty frame transmitting power corresponding to 2 work song frames are respectively P 1=30dBm and P 2=39dBm, and the maximum transmission power of patient first base station, described second community (A, B, C, D) is respectively P a, P b, P c, P d, wherein, P b=P c=P dand P 1≤ P a< P 2≤ P b.So in this scene, first base station can only by almost the position of empty frame and the transmission power information of corresponding almost empty frame send to the second base station, and do not send transmission power information corresponding to other non-almost empty frame, such as the form of following table 1 can be sent to the second base station.Certain those skilled in the art is known, power information corresponding for other non-almost empty frame also can be sent to the second base station by the first base station, or with other form by almost the position of empty frame and the transmission power information of correspondence thereof send to the second base station, as long as the second base station can confirm the almost position of empty frame and the transmitted power of correspondence thereof.
Subframe Index 1 2 3 4 5 6 7 8 9 10
Power level 30dBm 39dBm / / / / / / / /
Table 1
When the second base station serving the second community (A, B, C, D) receives information as described in Table 1, first determine that No. 1 and the 2nd work song frame are for almost empty frame and corresponding transmitting power thereof.
According to P b=P c=P dand P 1≤ P a< P 2≤ P bsecond base station can confirm that the transmitting power of No. 1 and No. 2 almost empty frame meets the maximum transmission power that the first base station can be tolerated in the second community (B, C, D), therefore the frame structure for described second community (B, C, D) can be determined in the second base station, be such as 1100000000, or 0011111111.Namely for the first base station, No. 1 and the 2nd work song frame are almost empty frame, and for the second base station, can carry out transmission and the transfer of data of normal power in No. 1 and/or the 2nd work song frame, thus avoid the interference between the first community and the second community E.Certainly, transmitting power is respectively P 1, P 2almost empty frame also can lay respectively at other subframes on described frame structure, as transmitting power is respectively P 1, P 2almost empty frame also can be positioned at the 3rd work song frame on described frame structure and the 4th work song frame, repeat no more herein.
Equally, according to P b=P c=P dand P 1≤ P a< P 2≤ P bsecond base station can confirm that the transmitting power of No. 1 almost empty frame meets the maximum transmission power that the second community A can tolerate the first base station, therefore the frame structure for described second community A can be determined in the second base station, such as, be 1000000000, or 0111111111.Namely, for the first base station, the 1st work song frame is almost empty frame, and for the second base station, can carry out transmission and the transfer of data of normal power on the 1st work song frame, thus avoids the interference between the first community and the second community A.
And for example, please refer to shown in table 2, is example explanation to have the network scenarios of first community and four the second communities (E, F, G, H).
Suppose that the second community (E, F, G, H) can tolerate that the maximum transmission power of the first base station is respectively P e, P f, P g, P h.
According to above-mentioned formula (1), the first base station calculates the present load ratio of each second community (E, F, G, H) in described second community (E, F, G, H).Assuming that the present load ratio of the second community G is at described second community (E, F, G, H) be maximum in, mode according to describing in pre-defined or above-mentioned second embodiment determines described second community (E, F, G, H) in any one community needed for the number of almost empty frame be no more than 4.According to the almost empty frame number determined, the almost position of empty frame on frame structure described in can determining further.Certainly almost the position of empty frame also can be determined according to the mode described in pre-defined or above-mentioned second embodiment, does not repeat them here.
Further, first base station is according to described second community (E, F, G, H) can tolerate the maximum transmission power of described first base station determine described in the transmitting power of almost empty frame, and the transmission power information of the position of described almost empty frame and almost empty frame is sent to described second base station.Second base station receive described in almost empty frame position and almost empty frame transmission power information and according to described second community (E, F, G, H) maximum transmission power of described first base station of each self energy tolerance, determines for each second community (E, F, G, H) frame structure.
Suppose that described first base station determines the 2nd, 4,6,8 work song frames are almost empty frame, and the transmitting power of correspondence is respectively P 2, P 4, P 6, P 8.First base station can by the form of such as following table 2 by almost the position of empty frame and the transmitting power of corresponding almost empty frame are sent to the second base station.Can certainly send with other form, not repeat them here.
Subframe Index 1 2 3 4 5 6 7 8 9 10
Power level / P 2 / P 4 / P 6 / P 8 / /
Table 2
For the second community E, the maximum transmission power P of described first base station can be tolerated e, suppose P 2≤ P e, P 4> P e, P 6> P e, P 8≤ P ethen the second base station can confirm that the transmitting power of No. 2 and No. 8 almost empty frame meets the maximum transmission power that the second community E can tolerate the first base station, therefore the frame structure for described second community E can be determined in the second base station, such as, be 0100000100, or 1011111011.Namely for the first base station, No. 2 and the 8th work song frame are almost empty frame, and for the second base station, transmission and the transfer of data of normal power can be carried out in No. 2 and/or the 8th work song frame, thus avoid the interference between the first community and the second community E.
For the second community F, the maximum transmission power P of described first base station can be tolerated f, suppose P 2≤ P f, P 4≤ P f, P 6> P f, P 8≤ P fthen the second base station can confirm that the transmitting power of No. 2, No. 4 and No. 8 almost empty frame meets the maximum transmission power that the second community F can tolerate the first base station, therefore the frame structure for described second community F can be determined in the second base station, such as, be 0101000100, or 1010111011.Namely for the first base station, No. 2, No. 4 and the 8th work song frame are almost empty frame, and for the second base station, transmission and the transfer of data of normal power can be carried out in the different permutation and combination of No. 2 and/or No. 4 and/or the 8th work song frame, thus avoid the interference between the first community and the second community F.Such as, the second base station can on the 2nd work song frame, also can in No. 2 and the 4th work song frame, transmission and the transfer of data of normal power can also be carried out in No. 2, No. 4 and the 8th work song frame, repeat no more herein.
For the second community G, the maximum transmission power P of described first base station can be tolerated g, suppose P 2≤ P g, P 4≤ P g, P 6≤ P g, P 8≤ P gthen the second base station can confirm that the transmitting power of No. 2, No. 4, No. 6 and No. 8 almost empty frame all meets the maximum transmission power that the second community G can tolerate the first base station, therefore the frame structure for described second community G can be determined in the second base station, be such as 0101010100, or 1010101011.Namely, for the first base station, No. 2, No. 4, No. 6 and the 8th work song frame are almost empty frame.And for the second base station, transmission and the transfer of data of normal power can be carried out in the different permutation and combination of No. 2 and/or No. 4 and/or the 6th work song frame and/or the 8th work song frame, thus the interference avoided between the first community and the second community G, repeat no more herein.
For the second community H, the maximum transmission power P of described first base station can be tolerated h, suppose P 2≤ P h, P 4> P h, P > P h, P 8> P hthen the second base station can confirm that the transmitting power of No. 2 almost empty frame meets the maximum transmission power that the second community H can tolerate the first base station, therefore the frame structure for described second community H can be determined in the second base station, such as, be 0100000000, or 1011111111.Namely, for the first base station, No. 21 subframe is almost empty frame.And for the second base station, transmission and the transfer of data of normal power can be carried out on the 2nd work song frame, thus avoid the interference between the first community and the second community H.
In the present embodiment, the subframe position of above-mentioned almost empty frame and transmitting power are sent to the second base station serving above-mentioned second community by X2 interface by above-mentioned first base station.Or the subframe position of above-mentioned almost empty frame and transmitting power are sent to by S1 interface or Uu interface (described Uu interface is such as eated dishes without rice or wine for air interface or abbreviation) the second base station serving above-mentioned second community by above-mentioned first base station.Such as, when being received and sent messages by Uu interface between first, second base station above-mentioned, above-mentioned first base station sends subframe position and the transmitting power of above-mentioned almost empty frame in the broadcast of above-mentioned first community that it controls, and above-mentioned second base station is read above-mentioned broadcast thus obtained subframe position and the transmitting power of above-mentioned almost empty frame.Again such as, the subframe position of above-mentioned almost empty frame and transmitting power, after above-mentioned broadcast is read in above-mentioned first community, are reported above-mentioned second base station by terminal equipment.
Therefore, in described 3rd embodiment, second base station receives position and the transmitting power of the almost empty frame that described first base station sends, and according to the maximum transmission power of patient first base station, the second community, determine the frame structure for described second community voluntarily, thus reduce the interference of described first community and described second minizone, improve the spectrum efficiency of the first community in almost empty frame, also can realize the time-domain transfer resource different according to the different business demand flexible allocation of the second community.
The means of communication of the fourth embodiment of the present invention, with reference to shown in figure 4, comprising:
S401: the adjustment information being positioned at the second community under the second base station that the first base station serving the first community obtains according to it, determines the transmitting power of subframe;
S402: the transmitting power of described subframe is sent to described second base station by described first base station, the frame structure determining for described second community according to the transmitting power of described subframe and described adjustment information in order to described second base station.
In S401, the first base station determines that the transmitting power of subframe comprises the transmitting power of the almost empty frame determined on frame structure and the transmitting power of non-almost empty frame.Wherein, the first base station, according to the adjustment information of the second community, determines that the position of almost empty frame is identical with the S301 in the S201 in the second embodiment and the 3rd embodiment with the step of the almost transmitting power of empty frame.Further, the first base station determines that the transmitting power of non-almost empty frame can be that the first base station obtains voluntarily according to the current load situation of the first community, repeats no more herein.
In S402, the transmitting power that described first base station is maximum can be tolerated according to the transmitting power of described subframe and described second community in described second base station, or the frame structure for described second community is determined according to the interference threshold of the transmitting power of described subframe and described second community in described second base station.
Wherein, described second community can be extrapolated according to the interference threshold of described second community can tolerate and the transmitting power that described first base station is maximum specifically can refer to the associated description of the second embodiment, do not repeating herein.
Such as, the power information of all subframes and correspondence thereof can be sent to the second base station by the first base station.As with the form of following table 3 by as described in the transmitting power of subframe send to as described in the second base station, also can send to the second base station with other form.
Table 3
Illustrate for network scenarios as shown in Figure 5 equally, after described second base station receives information as shown in table 3, determine that No. 2 and the 8th work song frame are the transmitting power of almost empty frame and corresponding almost empty frame according to the transmitting power in each subframe.Second base station is according to the maximum transmission power of the position of above-mentioned almost empty frame and patient first base station of corresponding transmitting power and the second community.Or the associated description that can refer to for the mode of the frame structure of the second community in the 3rd embodiment is determined in the second base station according to the interference threshold of the position of above-mentioned almost empty frame and corresponding transmitting power and described second community, repeat no more herein.
In the present embodiment, the transmitting power of described subframe is sent to the second base station serving described second community by described first base station by X2 interface.Or the transmitting power of described subframe is sent to by S1 interface or Uu interface (described Uu interface is such as eated dishes without rice or wine for air interface or abbreviation) the second base station serving described second community by described first base station.Such as, when being received and sent messages by Uu interface between first, second base station described, described first base station sends the transmitting power of described subframe in the broadcast of described first community that it controls, and described second base station is read described broadcast thus obtained the transmitting power of described subframe.Again such as, the transmitting power of described subframe, after described broadcast is read in described first community, is reported described second base station by terminal equipment.
By the scheme that the present embodiment provides, the subframe transmitting power that second base station can send according to the first base station received, and second community can tolerate that the maximum transmission power of described first base station determines frame structure voluntarily, thus reduce the interference of described first community and described second minizone, improve the spectrum efficiency of the first community in almost empty frame, also can realize the time-domain transfer resource different according to the different business demand flexible allocation of the second community.
The fifth embodiment of the present invention provides a kind of base station, and its primary structure shown in reference diagram 6, can comprise:
First receiver 51, for receiving the adjustment information of the second community be positioned under the second base station; First processor 52, for the adjustment information according to described second community, determine the position of almost empty frame and the transmitting power of described almost empty frame, and determine the frame structure for described second community according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame; First transmitter 53, for sending described frame structure to the second base station.
Described first processor 52 is further used for the interference threshold according to described second community, and the path loss of the first community under described base station and described second minizone determines that the transmitting power that described base station is maximum can be tolerated in described second community.
Described first processor 52 is further used for tolerating according to described second community the transmitting power that described base station is maximum, the transmitting power of almost empty frame described in determining.
The action that described in the almost empty frame collocation method that described base station can realize above-mentioned first to fourth embodiment, the first base station performs, such as, described first processor 52 can perform the action of S102 in the first embodiment, also the action of S202 in the second embodiment can be performed, to reduce the interference of described first community and described second minizone, improve the spectrum efficiency of the first community in almost empty frame, also can realize the time-domain transfer resource different according to the different business demand flexible allocation of the second community.
The sixth embodiment of the present invention provides a kind of base station, and its primary structure shown in reference diagram 7, can comprise:
Second transmitter 61, for launching the adjustment information of the second community be positioned under described base station to the first base station serving the first community; Second receiver 62, for the transmitting power of the position and described almost empty frame that receive the almost empty frame that described first base station is determined according to described adjustment information; Second processor 63, for determining the frame structure for described second community according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame.
Described second processor 63 is further used for the interference threshold according to described second community, and the path loss of described first community and described second minizone determines that the transmitting power that described first base station is maximum can be tolerated in described second community.
The action that described in the almost empty frame collocation method that described base station can realize described first to fourth embodiment, the second base station performs, such as, described second processor 63 can perform the action of S102 in the first embodiment, also the action of S302 in the 3rd embodiment can be performed, to reduce the interference of described first community and described second minizone, improve the spectrum efficiency of the first community in almost empty frame, also can realize the time-domain transfer resource different according to the different business demand flexible allocation of the second community.
It will be appreciated by those skilled in the art that, in the present embodiment, the first community (as interference source community) is relative concept with the second community (as victim cell), second community can relative to the first community as victim cell, simultaneously also can relative to other community as interference source community.The base station of the present embodiment can be the base station as victim cell, still can comprise the function of the base station as described in the 5th embodiment as the base station of interference source community.
A kind of terminal equipment that the seventh embodiment of the present invention provides, its primary structure can shown in reference diagram 8, comprise: the 3rd receiver 71, for receiving the frame structure for the second community be positioned under the second base station that the first base station sends under the first community, described frame structure is determined by the transmitting power of the first base station according to the subframe position of adjustment information, the almost empty frame of described second community and described almost empty frame; 3rd transmitter 72, for sending described frame structure to described second base station.
A kind of terminal equipment that the eighth embodiment of the present invention provides, its primary structure can shown in reference diagram 9, comprise: the 4th receiver 81, the basis sent under the first community for receiving the first base station is positioned at the subframe position of the determined almost empty frame of adjustment information and the transmitting power of described almost empty frame of the second community under the second base station; 4th transmitter 82, for described in sending almost the subframe position of empty frame and the transmitting power of described almost empty frame to described second base station, the frame structure determining for described second community according to the transmitting power of the adjustment information of described second community, the subframe position of described almost empty frame and described almost empty frame in order to described second base station.
The action that described in the almost empty frame collocation method that the first base station in 7th, the 8th embodiment of the present invention can realize described first to fourth embodiment, the first base station performs, such as, described first base station can perform the action of S102 in the first embodiment, also can perform the action of S202 in the second embodiment.The action that described in the almost empty frame collocation method that the second base station in 7th, the 8th embodiment of the present invention can realize described first to fourth embodiment, the second base station performs, such as, described second base station can perform the action of S102 in the first embodiment, also can perform the action of S302 in the 3rd embodiment.Therefore the terminal equipment of described 7th, the 8th embodiment normally can receive the message of described second base station transmission, reduces the interference that described first base station is caused it.
The present invention also provides a kind of communication system, and it comprises the first base station in above-described embodiment, the second base station and terminal equipment.By the configuration to almost empty frame in described communication system, transfer of data between described first base station and the second base station can not be disturbed mutually, and described terminal equipment normally can receive the message of described first base station and the transmission of the second base station, improve the spectrum efficiency of the first community in almost empty frame, also can realize the time-domain transfer resource different according to the different business demand flexible allocation of the second community.Above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (21)

1. means of communication, is characterized in that comprising:
The adjustment information being positioned at the victim cell under the second base station that the first base station serving interference source community obtains according to it, determines the position of almost empty frame and the transmitting power of almost empty frame;
According to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame, determine the frame structure for described victim cell;
Wherein, described adjustment information comprises: the present load of described victim cell and described victim cell can tolerate the transmitting power that described first base station is maximum, or described adjustment information comprises present load and the interference threshold of victim cell.
2. the means of communication as claimed in claim 1, is characterized in that described according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame, determine, for the frame structure of described victim cell, to comprise:
The position of described first base station according to described adjustment information, described almost empty frame and the transmitting power of described almost empty frame, determine the frame structure for described victim cell, and described frame structure be sent to described second base station.
3. the means of communication as claimed in claim 1, is characterized in that described according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame, determine, for the frame structure of above-mentioned victim cell, to comprise:
The position of the transmitting power of described almost empty frame and described almost empty frame is sent to described second base station by described first base station, so that the position of described second base station according to described adjustment information, described almost empty frame and the transmitting power of described almost empty frame, determine the frame structure of described victim cell.
4. the means of communication as described in any one of claim 1-3, is characterized in that, also comprise:
Described first base station obtains described adjustment information.
5. the means of communication as claimed in claim 4, is characterized in that described first base station obtains described adjustment information, comprising:
Described first base station is according to the interference threshold of described victim cell, and the path loss between described interference source community and described victim cell determines that described victim cell can tolerate the transmitting power that described first base station is maximum; Or
The described victim cell that described first base station receives described second base station transmission can tolerate the transmitting power that described first base station is maximum, wherein said victim cell can tolerate the maximum transmitting power in described first base station by described second base station according to the interference threshold of described victim cell, and the path loss between described interference source community and described victim cell is determined.
6. the means of communication as described in any one of claim 4-5, is characterized in that, comprise further:
The transmitting power that described first base station is maximum can be tolerated according to described victim cell in described first base station, the transmitting power of the almost described almost empty frame that empty frame is corresponding described in determining.
7., as the means of communication of claim 4-6 according to any one of it, it is characterized in that described according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame, determine, for the frame structure of above-mentioned victim cell, to comprise:
Can tolerate that the maximum transmitting power in described first base station, the position of described almost empty frame and the transmitting power of described almost empty frame determine the frame structure for described victim cell according to above-mentioned victim cell, or
The frame structure for described victim cell is determined according to the transmitting power of the interference threshold of described victim cell, the position of described almost empty frame and described almost empty frame.
8. the means of communication as described in any one of claim 1 to 7, is characterized in that: described interference source community and described victim cell are neighbor cell.
9. a base station, is characterized in that comprising:
First receiver, for receiving the adjustment information of the victim cell be positioned under the second base station;
First processor, for according to described adjustment information, determine the position of almost empty frame and the transmitting power of described almost empty frame, and determine the frame structure for described victim cell according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame;
First transmitter, for sending described frame structure to described second base station;
Wherein, described adjustment information comprises: the present load of described victim cell and described victim cell can tolerate the transmitting power that the first base station is maximum, or described adjustment information comprises present load and the interference threshold of victim cell.
10. base station as claimed in claim 9, is characterized in that:
Described first processor is further used for: according to the interference threshold of described victim cell, and is positioned at the interference source community under described base station and the path loss between described victim cell determines that described victim cell can tolerate the transmitting power that described base station is maximum.
11., as the base station of claim 9 or 10, is characterized in that:
Described first processor is further used for: can tolerate according to described victim cell the transmitting power that described base station is maximum, the transmitting power of almost empty frame described in determining.
12., as the base station of claim 10 or 11, is characterized in that:
Described interference source community and described victim cell are neighbor cell.
13. 1 kinds of base stations, is characterized in that comprising:
Second transmitter, for launching the adjustment information of the victim cell be positioned under described base station to the first base station serving interference source community;
Second receiver, for the transmitting power of the position and described almost empty frame that receive the almost empty frame that described first base station is determined according to described adjustment information;
Second processor, for determining the frame structure for described victim cell according to the position of described adjustment information, described almost empty frame and the transmitting power of described almost empty frame;
Wherein, described adjustment information comprises: the present load of described victim cell and described victim cell can tolerate the transmitting power that described first base station is maximum, or described adjustment information comprises present load and the interference threshold of victim cell.
14. base stations as claimed in claim 13, is characterized in that:
Described second processor, is further used for: according to the interference threshold of described victim cell, and the path loss between described interference source community and described victim cell determines that described victim cell can tolerate the transmitting power that described first base station is maximum.
15. base stations as described in claim 13 or 14, is characterized in that:
Described interference source community and described victim cell are neighbor cell.
16. 1 kinds of terminal equipments, is characterized in that comprising:
3rd receiver, for receiving the frame structure for the victim cell be positioned under the second base station that the first base station sends in interference source community, described frame structure is determined by the transmitting power of the first base station according to the subframe position of the adjustment information of described victim cell, almost empty frame and described almost empty frame;
3rd transmitter, for sending described frame structure to described second base station;
Wherein, described adjustment information comprises: the present load of described victim cell and described victim cell can tolerate the transmitting power that described first base station is maximum, or described adjustment information comprises present load and the interference threshold of victim cell.
17. terminal equipments as claimed in claim 16, is characterized in that:
According to described victim cell, the transmitting power of described almost empty frame can tolerate that the maximum transmitting power in described first base station is determined by the first base station.
18. terminal equipments as described in claim 16 or 17, is characterized in that:
Described interference source community and described victim cell are neighbor cell.
19. 1 kinds of terminal equipments, is characterized in that comprising:
4th receiver, the basis sent in interference source community for receiving the first base station is positioned at the subframe position of the determined almost empty frame of adjustment information and the transmitting power of described almost empty frame of the victim cell under the second base station;
4th transmitter, for described in sending almost the subframe position of empty frame and the transmitting power of described almost empty frame to described second base station so that the frame structure for described victim cell is determined according to the transmitting power of the adjustment information of described victim cell, the subframe position of described almost empty frame and described almost empty frame in described second base station;
Wherein, described adjustment information comprises: the present load of described victim cell and described victim cell can tolerate the transmitting power that described first base station is maximum, or described adjustment information comprises present load and the interference threshold of victim cell.
20. terminal equipments as claimed in claim 19, is characterized in that:
According to described victim cell, the transmitting power of described almost empty frame can tolerate that the maximum transmitting power in described first base station is determined by the first base station.
21. terminal equipments as described in claim 19 or 20, is characterized in that:
Described interference source community and described victim cell are neighbor cell.
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